n = 123
f = 456.789
s1 = 'Hello, world'
s2 = 'Hello, \'Adam\''
s3 = r'Hello, "Bart"'
s4 = r'''Hello,
Lisa!'''

print(s1)
print(s2)
print(s3)
print(s4)

# print tuple
L = [
    ['Apple', 'Google', 'Microsoft'],
    ['Java', 'Python', 'Ruby', 'PHP'],
    ['Adam', 'Bart', 'Lisa']
]

print(L[0][0])


list = [x for x in range(1,11) if x%2==0  ]
print(list)
print("==============")
list1 = [x if x % 2 == 0 else -x for x in range(1, 11)]
print(list1)
print("===============")

